Cell division in stichococcus
Cell division in stichococcus
复制标题
穗球菌的细胞分裂
DOI：
10.1080/00071617400650081
复制
发表时间：
1974
影响因子：
2.4
通讯作者：
J. Pickett
中科院分区：
文献类型：
--
作者：
J. Pickett
除了缺乏中心粒外，细球菌属的间期细胞形态和细胞分裂与克雷伯索米氏菌相似。刺球藻的细胞主要由叶绿体和蛋白核充满，其一侧有两个线粒体和一个小的过氧化物酶体。叶绿体/蛋白核在前期早期分裂，可能完全分裂，并且细胞核插入两半之间。 3-5 个微管带总是围绕着前期核；这些在中期消失。纺锤体是开放的，子核在末期和胞质分裂期间保持较远的距离，并且液泡聚集在它们之间；没有藻体与卵裂沟相关。这些结果表明，粘球菌属和克雷伯索米氏菌之间有密切的系统关系，这两种生物现在被认为与高等陆地植物的祖先的关系比大多数非毛菌目的其他成员更密切。
Except for the lack of a centriole, interphase cell morphology and cell division in Stichococcus is similar to that in Klebsormidium. The cell in Stichococcus is largely filled by a chloroplast and pyrenoid, at the side of which are two mitochondria and one small peroxisome. The chloroplast/pyrenoid cleaves early in prophase, probably completely, and the nucleus is inserted between the two halves. A band of 3–5 microtubules always encircles the prophase nucleus; these disappear by metaphase. The spindle is open, the daughter nuclei remain far apart at telophase and during cytokinesis, and vacuoles collect between them; no phycoplast is associated with the cleavage furrow. These results indicate a close phyletic relationship between Stichococcus and Klebsormidium, two organisms which are now considered to be more closely related to the progenitors of the higher land plants than most of the other members of the Ulotrichales.